/*
 * Copyright (C) 2012 YIXIA.COM
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.csh.wuziqi.util;

import android.annotation.SuppressLint;
import android.content.Context;
import android.net.ConnectivityManager;
import android.os.Build;
import android.provider.Settings;
import android.telephony.TelephonyManager;
import android.util.DisplayMetrics;

import java.util.Locale;

public class Device {
	public static String getLocale() {
		Locale locale = Locale.getDefault();
		if (locale != null) {
			String lo = locale.getLanguage();
			Log.i("getLocale " + lo);
			if (lo != null) {
				return lo.toLowerCase();
			}
		}
		return "en";
	}

	public static String getDeviceFeatures(Context ctx) {
		return getIdentifiers(ctx) + getSystemFeatures()
				+ getScreenFeatures(ctx);
	}

	@SuppressLint("NewApi")
	public static String getIdentifiers(Context ctx) {
		StringBuilder sb = new StringBuilder();
		if (Build.VERSION.SDK_INT > Build.VERSION_CODES.FROYO)
			sb.append(getPair("serial", Build.SERIAL));
		else
			sb.append(getPair("serial", "No Serial"));
		sb.append(getPair("android_id", Settings.Secure.getString(
				ctx.getContentResolver(), Settings.Secure.ANDROID_ID)));
		TelephonyManager tel = (TelephonyManager) ctx
				.getSystemService(Context.TELEPHONY_SERVICE);
		sb.append(getPair("sim_country_iso", tel.getSimCountryIso()));
		sb.append(getPair("network_operator_name", tel.getNetworkOperatorName()));
		sb.append(getPair("unique_id", Crypto.md5(sb.toString())));
		ConnectivityManager cm = (ConnectivityManager) ctx
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		sb.append(getPair(
				"network_type",
				cm.getActiveNetworkInfo() == null ? "-1" : String.valueOf(cm
						.getActiveNetworkInfo().getType())));
		return sb.toString();
	}

	@SuppressWarnings("deprecation")
	public static String getSystemFeatures() {
		StringBuilder sb = new StringBuilder();
		sb.append(getPair("android_release", Build.VERSION.RELEASE));
		sb.append(getPair("android_sdk_int", "" + Build.VERSION.SDK_INT));
		sb.append(getPair("device_cpu_abi", Build.CPU_ABI));
		sb.append(getPair("device_model", Build.MODEL));
		sb.append(getPair("device_manufacturer", Build.MANUFACTURER));
		sb.append(getPair("device_board", Build.BOARD));
		sb.append(getPair("device_fingerprint", Build.FINGERPRINT));
		sb.append(getPair("device_cpu_feature", CPU.getFeatureString()));
		return sb.toString();
	}

	public static String getScreenFeatures(Context ctx) {
		StringBuilder sb = new StringBuilder();
		DisplayMetrics disp = ctx.getResources().getDisplayMetrics();
		sb.append(getPair("screen_density", "" + disp.density));
		sb.append(getPair("screen_density_dpi", "" + disp.densityDpi));
		sb.append(getPair("screen_height_pixels", "" + disp.heightPixels));
		sb.append(getPair("screen_width_pixels", "" + disp.widthPixels));
		sb.append(getPair("screen_scaled_density", "" + disp.scaledDensity));
		sb.append(getPair("screen_xdpi", "" + disp.xdpi));
		sb.append(getPair("screen_ydpi", "" + disp.ydpi));
		return sb.toString();
	}

	private static String getPair(String key, String value) {
		key = key == null ? "" : key.trim();
		value = value == null ? "" : value.trim();
		return "&" + key + "=" + value;
	}
}
